Dev tools: the Fast Pair probe asks for the ANC state and tests the ringAfter the passive read it sends get ANC state (08 11), ring both buds for 3 s(04 01 03 03) and stop (04 01 00), and names each reply (ACK, NAK reason,ANC state). These messages carry no MAC. Set ANC state needs the account key,so the probe does not send it.